ZHCSQ77A February   2023  – September 2023 TPS25948

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  6. 5 Device Comparison Table
  7. 6 Pin Configuration and Functions
  8. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Electrical Characteristics
    5. 7.5 Timing Requirements
    6. 7.6 Switching Characteristics
    7. 7.7 Typical Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Undervoltage Lockout (UVLO and UVP)
      2. 8.3.2 Overvoltage Lockout (OVLO)
      3. 8.3.3 Inrush Current, Overcurrent, and Short Circuit Protection
        1. 8.3.3.1 Slew Rate (dVdt) and Inrush Current Control
        2. 8.3.3.2 Active Current Limiting
        3. 8.3.3.3 Short-Circuit Protection
      4. 8.3.4 Analog Load Current Monitor
      5. 8.3.5 Reverse Current Protection
      6. 8.3.6 Overtemperature Protection (OTP)
      7. 8.3.7 Fault Response and Indication (FLT)
      8. 8.3.8 Supply Good Indication (SPLYGD/SPLYGD)
    4. 8.4 Device Functional Modes
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Single Device, Self-Controlled
    3. 9.3 Typical Application
      1. 9.3.1 Design Requirements
      2. 9.3.2 Detailed Design Procedure
        1. 9.3.2.1 Setting Overvoltage Threshold
        2. 9.3.2.2 Setting Output Voltage Rise Time (tR)
        3. 9.3.2.3 Setting Overcurrent Threshold (ILIM)
        4. 9.3.2.4 Setting Overcurrent Blanking Interval (tITIMER)
      3. 9.3.3 Application Curves
    4. 9.4 Active ORing
    5. 9.5 Priority Power MUXing
    6. 9.6 Parallel Operation
    7. 9.7 USB PD Port Protection
    8. 9.8 Power Supply Recommendations
      1. 9.8.1 Transient Protection
      2. 9.8.2 Output Short-Circuit Measurements
    9. 9.9 Layout
      1. 9.9.1 Layout Guidelines
      2. 9.9.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 接收文档更新通知
    3. 10.3 支持资源
    4. 10.4 Trademarks
    5. 10.5 静电放电警告
    6. 10.6 术语表
  12. 11Mechanical, Packaging, and Orderable Information

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7.4 Electrical Characteristics

(Test conditions unless otherwise noted) –40°C ≤ TJ ≤ 125°C, VIN = 12 V, OUT = Open, VEN/UVLO = 2 V, VOVLO = 0 V, RILM = 536 Ω , dVdT = Open, ITIMER = Open, SPLYGD/SPLYGD = Open, FLT = Open for TPS259480x, RCBCTRL = Open for TPS259481x/2x. All voltages referenced to GND.
Test Parameter Description MIN TYP MAX UNITS
INPUT SUPPLY (IN)
VUVP(R),IN IN supply undervoltage protection rising threshold 2.7 3.0 3.3 V
VUVP(F),IN IN supply undervoltage protection falling threshold  2.2 2.4 2.65 V
IQ(ON,IN) IN supply ON state quiescent current when powered from IN, VEN > VUVLO(R) 439 640 µA
IQ(OFF,UVLO,IN) IN supply OFF state current when powered from IN, VSD(F) < VEN < VUVLO(R) 73 193
µA
IOUTLKG(ON) OUT supply leakage current when powered from IN 432 640
µA
IOUTLKG(OFF) OUT supply leakage current when powered from IN, UVLO condition (VSD(F) < VEN < VUVLO(R)) 7 29
µA
ISD(IN) IN supply shutdown current when powered from IN, VEN < VSD(F) 7 12
µA
VUVP(R),OUT OUT supply undervoltage protection rising threshold 2.7 3.0 3.3 V
VUVP(F),OUT OUT supply undervoltage protection falling threshold  2.2 2.4 2.65 V
OUTPUT SUPPLY (OUT)
IQ(ON,OUT) OUT supply ON state quiescent current when powered from OUT, VEN > VUVLO(R)  422 640
µA
IQ(OFF,UVLO,OUT) OUT supply OFF state current when powered from OUT, VSD(F) < VEN < VUVLO(R) 71 110
µA
ISD(OUT) OUT supply shutdown current when powered from OUT, VEN < VSD(F) 7 29
µA
ON RESISTANCE (IN - OUT)
RON VIN = 12 V, IOUT = 3 A, TJ = 25℃ 12.2 15 mΩ
3.5 ≤ VIN ≤ 23 V, IOUT = 3 A, –40℃ ≤ TJ ≤ 125℃ 20 mΩ
ENABLE/UNDERVOLTAGE LOCKOUT (EN/UVLO)
VUVLO(R) EN/UVLO pin rising threshold to turn FET ON 1.17 1.2 1.23 V
VUVLO(F) UVLO pin falling threshold to turn FET OFF 1.07 1.1 1.12 V
VSD(F) EN/UVLO falling threshold for lowest shutdown current 0.54 0.75 V
IENLKG EN/UVLO pin leakage current –0.1 0.1
µA
OVERVOLTAGE LOCKOUT (OVLO)
VOV(R) OVLO pin rising threshold 1.18 1.2 1.23 V
VOV(F) OVLO pin falling threshold 1.07 1.1 1.12 V
IOVLKG OVLO pin leakage current, 0.5 V < VOVLO < 1.5 V –0.1 0.1
µA
OUTPUT LOAD CURRENT MONITOR (IMON)
GIMON Analog load current monitor gain (IMON : IOUT), IOUT = 1 A, IOUT < ILIM 114 133 154 µA/A
GIMON Analog load current monitor gain (IMON : IOUT), IOUT = 3 A
to 8 A, IOUT < ILIM		 116 133 149 µA/A
OVERCURRENT PROTECTION (OUT)
ILIM Overcurrent threshold, RILM = 2.43 kΩ 1.75 1.99 2.25 A
Overcurrent threshold, RILM = 1.62 kΩ 2.7 2.98 3.3 A
Overcurrent threshold, RILM = 604 Ω 7.2 8 8.7 A
IFLT Circuit-breaker threshold, ILM pin open (Single point
failure)		 0.1 A
Circuit-breaker threshold, ILM pin shorted to GND (Single point
failure)		 1.4 2.5 A
ISCGain Scalable Fast-trip current threshold (ISC) : ILIM Ratio (Steady-state/Start-up for TPS259480x/2x variants and Start-up for TPS259481x variants) 170% 184% 240%
IFFT Fixed Fast-trip current threshold, TPS259480x/2x variants only 16.9 25.1 31.0 A
Fixed Fast-trip current threshold, TPS259481x variants only 15 22.8 29 A
VFB VOUT threshold to exit current limit foldback 1.5 1.9 2.3 V
OVERCURRENT FAULT TIMER (ITIMER)
VINT ITIMER pin internal pull-up voltage 2.3 2.6 2.7 V
RITIMER ITIMER pin internal pull-up resistance 15.7 kΩ
IITIMER ITIMER pin discharge current, IOUT > ILIM 1.5 1.9 2.45
µA
ΔVITIMER ITIMER discharge differential voltage threshold 1.28 1.51 1.75 V
REVERSE CURRENT BLOCKING (IN - OUT)
VFWD VIN – VOUT forward regulation voltage, IOUT = 10 mA 0.1 10.6 24.5 mV
VREVTH VIN – VOUT threshold for fast BFET turn off (enter reverse current blocking) –44.8 –29.5 –14.8 mV
VFWDTH VIN – VOUT threshold for fast BFET turn on (exit reverse current blocking) 70 105.9 140 mV
IREVLKG Reverse leakage current during reverse current blocking condition –2 –1.1 µA
SUPPLY GOOD INDICATION (SPLYGD/SPLYGD)
VSPLYGD SPLYGD pin low voltage VIN > 3.3V, Strong pull-up  600 mV
VSPLYGD SPLYGD pin low voltage VIN < 3.3V, EN < VSD(F), weak pull-up 650 930 mV
VSPLYGD SPLYGD pin low voltage VIN < 3.3V, EN < VSD(F), strong pull-up 785 990 mV
ISPLYGDLKG SPLYGD High leakage current –3 3
µA
ISPLYGDBLKG SPLYGD High leakage current –3 3
µA
FAULT INDICATION (FLT) or REVERSE BLOCKING CONTROL (RCBCTRL)
IFLTBLKG FLT leakage current –1 1
µA
RFLTB FLT pin internal pull-down resistance, TPS259480x variants only 11.8 Ω
IRCBCTRL RCBCTRL pin internal pull-up current, TPS259481x/2x variants only 5 µA
VIH,RCBCTRL RCBCTRL pin logic high detection threshold, TPS259481x/2x variants only 1.09 1.15 1.2 V
VIL,RCBCTRL RCBCTRL pin logic low detection threshold, TPS259481x/2x variants only 1.0 1.0 1.11 V
OVERTEMPERATURE PROTECTION (OTP)
TSD Thermal shutdown rising threshold, TJ rising 154 °C
TSDHYS Thermal shutdown hysteresis, TJ falling 10 °C
SLEW RATE CONTROL (DVDT)
Idvdt dVdt pin charging current 2.6 5.3 9
µA